Long-Term Borrowings (Tables)
 12 Months Ended
Dec. 31, 2016
Long-Term Borrowings [Abstract]  
Summary of Long-Term Borrowings
A summary of the borrowings entered by the Company as of December 31 is as follows:

  
2016
  
2015
 
       
Senior unsecured notes payable of $60,000 issued on
      
December 2005; due December 2020. Interest is payable monthly at a fixed rate of 6.60%.
 
$
24,000
  
$
24,000
 
Secured loan payable of $41,000, payable in monthly installments of $137 through July 1, 2024, plus interest at a rate reset periodically of 100 basis points over selected LIBOR maturity (which was 1.23% at December 31, 2015.)
  
-
   
12,827
 
Secured loan payable of $11,187, payable in monthly installments of $137 through October 1, 2023, plus interest at a rate reset periodically of 100 basis points over selected LIBOR maturity (which was 1.77% at December 31, 2016.)
  
11,187
   
-
 
         
Total borrowings
  
35,187
   
36,827
 
         
Less unamortized debt issuance costs
  
102
   
-
 
         
  
$
35,085
  
$
36,827
 
Aggregate Maturities of Company's Long Term Borrowings
Aggregate maturities of the Company’s borrowings as of December 31, 2016 are summarized as follows:

Year ending December 31
   
2017
  
1,640
 
2018
  
1,640
 
2019
  
1,640
 
2020
  
25,640
 
2021
  
1,640
 
Thereafter
  
2,987
 
  
$
35,187